Successful Resection of a Large Appendiceal Mucinous Adenocarcinoma with Rectal Invasion Using a Combined Transanal Approach: A Case Report

Key Points

• The aim is to report a successful surgical strategy for resecting a large appendiceal mucinous adenocarcinoma with rectal invasion.
• Patient diagnosed with cT4bN0M0 cStage IIC appendiceal cancer.
• Combined segmental resection of the cecum and low anterior resection via transanal approach.
• 16-month postoperative follow-up confirmed no recurrence.
• Tumor was successfully removed with negative margins.
• Invasion into bladder was noted, but bladder preservation was achieved.
• 18-month follow-up showed no evidence of recurrence.